| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Multicolor Emitting Block Copolymer-Integrated Graphene Quantum Dots for Colorimetric, Simultaneous Sensing of Temperature, pH, and Metal Ions |
| 초록 |
We developed a novel and versatile platform for highly-efficient, colorimetric multi-functional sensors using block copolymer-integrated graphene quantum dots (bcp-GQDs). In particular, the multi-functional sensing behavior is successfully generated simply by grafting blue emitting, temperature-responsive block copolymers onto green-emitting, 10-nm sized GQD with the GQD providing luminescent response to pH changes. Thus, the bcp-GQDs showed simultaneous, orthogonal sensing behavior to temperature and pH, as well as dose-dependent responses to different types of metal ions. In addition, the bcp-GQD sensor showed excellent reversibility and dispersion stability in pure water, indicating that our system is an ideal platform for environmental and biological applications. The detailed mechanism of the responsive behavior of the bcp-GQDs was elucidated by measurements of time-resolved fluorescence and dynamic light scattering. |
| 저자 |
김범준, 이도창, 김다흰, 조한희, 이준혁, 양현승, 박찬호
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| 소속 |
KAIST |
| 키워드 |
responsive polymer; graphene quantum dot; colorimetric sensor
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| E-Mail |
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